Hi Mauro! Agreed. But.....with the small thickness of the columns, they should equalize quickly, shouldn't they? The mirror is being figured and those who have...
I and others will be very interested in hearing how well it figures. I have seen an interferogram on a "commercial" design similar to this and when tested in...
Hi Paul, Your situation sounds almost exactly as what I experienced on my 18" Obsession (#445). On mine, the collimation would change as the tube was moved...
... 18" ... of ... I would suggest buying the 1/2" Laser Cut Sling Bolts from Dave K. They come with the Kevlar Sling Kit that he sells for $25. I didn't use...
Hi Mauro! ... From: "mauro_dalio" <mauro_dalio@...> ... Understood. Being that they are about 1/2" X 1/2" square, I'm hoping they will equalize quickly so...
Bill, Forgive me if you posted this before but who made the mirror up to this point and is there a site that describes the process? I would be interested in...
Hi Rob, No experiences with Mittler mirrors... But he does make a claim on his AstroMart ads about his quality being as "good or better" then Carl Zambuto....
Hi Paul, Yes, his ads are what caught my interest. I just haven;t heard from any users of his mirrors. Rob ... on his ... Carl ... Carl's ... quality ... which...
I just ordered a 22" NightSky GoTo with all the bells and whistles. I appreciate everyone's help in my decision making process. I posted questions on several...
Gregg, I talk to Jim last night and he told me... congrats to you! I am sure you'll love it! Glad you do not live down here - another several weeks of clouds...
Gary: Thank you. It was a big check to write, just for the deposit. I am a bit nervous. I am not new to the game, but my experience is almost totally with...
Wow.....Im sure you love the scope. A member of our local club has the 16" model and is very happy with it. I'm not sure if will make it by summer for you...
Gregg, I live in South Carolina and there were not many known big dobs when I went from my 12.5 to a 20. I can tell you that the 20 was sure a LOT more fun and...
Bob: Thank you for the e-mail. I am sure in a few months I will really want the scope right away, but now is not the best time given the winter and my...
I have recently added wireless 232 to my dob. Together with the Argo Navis/ServoCat combination and using Starry Night Pro on my laptop the pointing accuracy...
Schott Glass has modified zerodur ceramic glass by increasing the concentration of crystals from 70% to 90%+ and by transforming the crystal structure from...
Hello everyone, I just recently finished my first (Obsession style truss tube) 13.1 inch f4.5 scope. The mirror is an old Coulter I had tested. First ...
Good evening everyone. I have never posted before. I have a small (by you standards) Dobsonian and I saw something I have never seen before. I was looking at...
Maybe a geosyncronous satellite. They show up around the celestial equator, and they "move" (actually stay stationary) at a sidereal rate compared to the...
Probably more like a near-geosyncronous satellite. Unless your scope has a drive system, the object would stand still in the field as the stars drifted by if...
From midnorthern latitudes, geosynchronous satellites appear to run roughly 5° below the celestial equator, so they run through or very near M42. Quite a...
I have seen these moving objects many times. I placed a picture under Photos at the very bottom called Orion with satellites. You can see streeks below the...
Say, Jim, was this just last night (Saturday) that you saw this? I've been playing with some satellite plotting software and can't find a match. I've found a...
Hello again, Thanks everyone for taking the time to answer my question. It was definately last night. The kids were watching "that's funny" on TV when I...
If you have no drive system on the scope, geo satellites should stand still and not move at all while the stars in the field will slowly drift out. The...
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